Shadowing in nuclear photo-absorption: Off-diagonal terms

Ditsas, P.; Read, B.J.; Shaw, Graham

doi:10.1016/0550-3213(75)90057-7

Cited by 18 publications

(13 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generalized vector meson dominance models describe deep-inelastic lepton scattering at small x purely in terms of hadronic degrees of freedom [177,178,179,180,181,182,183,184,185]. For a free nucleon this leads to the following picture: prior to its interaction with the target the virtual photon fluctuates into a hadronic state with invariant mass µ.…”

Section: Generalized Vector Meson Dominancementioning

confidence: 99%

Nuclear deep-inelastic lepton scattering and coherence phenomena

Piller¹,

Weise²

2000

Physics Reports

175

241

View full text Add to dashboard Cite

This review outlines our present experimental knowledge and theoretical understanding of deepinelastic scattering on nuclear targets. The emphasis is primarily on nuclear coherence phenomena, such as shadowing, where the key physics issue is the exploration of hadronic and quark-gluon fluctuations of a high-energy virtual photon and their passage through the nuclear medium. New developments in polarized deep-inelastic scattering on nuclei are also discussed, and more conventional binding and Fermi motion effects are summarized. The report closes with a brief outlook on vector meson electroproduction, nuclear shadowing at very large Q 2 and the physics of high parton densities in QCD.

show abstract

Section: Generalized Vector Meson Dominancementioning

confidence: 99%

Nuclear deep-inelastic lepton scattering and coherence phenomena

Piller¹,

Weise²

2000

Physics Reports

175

241

View full text Add to dashboard Cite

show abstract

“…The function F n (t) models the t-dependence of Σ n,n ′ (t), which goes beyond the original formulation of the GVMD model [26,27,28], which addressed only the forward t = 0 limit.…”

Section: A Dvcs Amplitudementioning

confidence: 99%

“…In this section, we extend the generalized vector meson dominance (GVMD) model [26,27,28] to the off-forward case and apply it to Deeply Virtual Compton Scattering (DVCS) on the nucleon.…”

Section: Dvcs On the Nucleonmentioning

confidence: 99%

“…In this paper, using the generalized vector meson dominance (GVMD) model [26,27,28], which is consistent with perturbative QCD at small transverse distances [29], we derive expressions for the amplitudes of DVCS on nucleons and nuclei, which are valid at high energies and which are applicable over a wide range of Q 2 . We show that the resulting cross section of DVCS on nucleons compares well to the HERA data [30,31].…”

Section: Introductionmentioning

confidence: 99%

“…The main idea of the GVMD model [26,27,28] is to approximate Eq. (2) by an infinite series of (ficticious) vector mesons of ever increasing mass,…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Deeply Virtual Compton Scattering on nucleons and nuclei in the Generalized Vector Meson Dominance model

2008

View full text Add to dashboard Cite

We consider Deeply Virtual Compton Scattering (DVCS) on nucleons and nuclei in the framework of generalized vector meson dominance (GVMD) model. We demonstrate that the GVMD model provides a good description of the HERA data on the dependence of the proton DVCS cross section on Q 2 , W (at Q 2 = 4 GeV 2 ) and t. At Q 2 = 8 GeV 2 , the soft W -behavior of the GVMD model somewhat underestimates the W -dependence of the DVCS cross section due to the hard contribution not present in the GVMD model. We estimate 1/Q 2 power-suppressed corrections to the DVCS amplitude and the DVCS cross section and find them large. We also make predictions for the nuclear DVCS amplitude and cross section in the kinematics of the future Electron-Ion Collider. We predict significant nuclear shadowing, which matches well predictions of the leadingtwist nuclear shadowing in DIS on nuclei.

show abstract

Inelastic scattering of cosmic ray muons on iron nuclei and the virtual photon shadowing

et al. 1984

View full text Add to dashboard Cite

Hadronic cascade showers originating from inelastic interactions of cosmic ray muons with iron nuclei have been observed in a calorimeter located between two magnetic spectrometers. The separation of those events from the electromagnetic showers has been successfully done in the ranges of the transferred energy v ≳ 50 GeV and its ratio to muon energy v/E ≳ 0,1, by utilizing the difference of their longitudinal cascade developments. The comparison of the obtained μ‐Fe cross section with available μ‐, e‐ and σ‐proton data as well as μ‐, e‐ and σ‐nucleus data indicates that; At v ˜ 100 GeV, the virtual photon cross section on iron nucleus is almost the same as the real photon one, at least Q2 ≳ 0.1 GeV2/c2, and is about 70% of the cross section on proton times the atomic mass number of iron, i.e. the shadowing effect is clearly seen. Up to TeV region, this virtual photon cross section on iron does not increase significantly. contrary to the tendency of the real photon cross section on proton around 100 GeV. This suggests most likely that the shadowing still increases with energy at such high energies.

show abstract

Shadowing in nuclear photo-absorption: Off-diagonal terms

Cited by 18 publications

References 12 publications

Nuclear deep-inelastic lepton scattering and coherence phenomena

Nuclear deep-inelastic lepton scattering and coherence phenomena

Deeply Virtual Compton Scattering on nucleons and nuclei in the Generalized Vector Meson Dominance model

Inelastic scattering of cosmic ray muons on iron nuclei and the virtual photon shadowing

Contact Info

Product

Resources

About